pragma solidity 0.5.9;

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
    address public owner;


    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);


    /**
     * @dev The Ownable constructor sets the original `owner` of the contract to the sender
     * account.
     */
    constructor() public {
        owner = msg.sender;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }

    /**
     * @dev Allows the current owner to transfer control of the contract to a newOwner.
     * @param newOwner The address to transfer ownership to.
     */
    function transferOwnership(address newOwner) public onlyOwner {
        require(newOwner != address(0));
        emit OwnershipTransferred(owner, newOwner);
        owner = newOwner;
    }

}
contract Bussiness is Ownable {
    uint public periodToPlay = 60; // 86400; // seconds

    mapping(address => uint) public timeTrackUser;
    event _random(address _from, uint _ticket);
    constructor() public {}
    function getAward() public {
        require(isValidToPlay());
        timeTrackUser[msg.sender] = block.timestamp;
        emit _random(msg.sender, block.timestamp);
    }

    function isValidToPlay() public view returns (bool){
        return periodToPlay <= now - timeTrackUser[msg.sender];
    }
    function changePeriodToPlay(uint _period) onlyOwner public{
        periodToPlay = _period;
    }

}